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Oil Water Separators in London, Ontario
Industrial Wastewater Canada sizes and supplies oil water separators for plants in London, Ontario. Local demand is driven by food & beverage processing, agri-food, auto parts, chemicals, discharging under London's sewer-use rules toward Thames River. Quote requests with flow rate and effluent type get a sized proposal.
Every vehicle wash bay, machine shop, fuel depot and refinery in Canada faces the same line item in its sewer-use bylaw: oil and grease, typically capped somewhere between 15 and 100 mg/L depending on the municipality. An oil water separator is the standard way to meet that cap. It exploits the density difference between oil and water: flow slows inside the vessel, droplets rise and coalesce into a surface layer that gets skimmed, and cleaned water leaves from below.
Two designs, one choice
The choice that matters is between the two main designs. A gravity API separator is a long rectangular basin sized to Stokes' law, built to let droplets of roughly 150 microns and larger rise out. It is robust, tolerant of solids and easy to maintain, which is why refineries still standardize on it. A coalescing-plate separator adds inclined plate packs or oleophilic media that intercept far smaller droplets, down to about 20 to 60 microns, so it reaches better effluent quality in a fraction of the footprint. Our coalescing configurations hold effluent under 10 ppm oil and grease in free-oil service, and many sites pair an API basin with a coalescing polishing stage.
Above-grade, below-grade and API 421
We quote both, in above-grade and below-grade tanks, with API 421 compliant configurations where the specification calls for it. Options include oil-stop valves that close automatically when the oil layer reaches capacity, high-level alarms, and sludge baffles for streams that carry grit. What a separator will not do is remove chemically emulsified or dissolved oil; if your stream carries surfactants from a wash process, we will tell you plainly that you need chemical treatment or flotation ahead of the separator, because selling you a tank that cannot meet your limit helps neither of us.
Sizing from your real flows
Sizing depends on flow rate, droplet size distribution and oil type, which is why the search term oil water separator, at 480 searches a month in Canada, so often ends in a mis-sized purchase from a catalogue. Send us your flow, a recent lab analysis or a description of the process, and your discharge destination. We return a sized configuration, budget price and delivery timeline, reviewed by a process engineer before it reaches you, for any site in Canada. Installation support and commissioning are quoted per project, and replacement plate packs and media remain available for the life of the vessel. Below-grade installations ship with traffic-rated covers where the separator sits in a drive lane, and we keep skimmer parts and alarm components on the shelf so a maintenance call does not become a compliance gap.
London sits at the centre of southwestern Ontario's agri-food belt, and its plants process what the surrounding counties grow: vegetables, dairy, grains and meat, alongside beverage bottlers, auto-parts makers and specialty chemical producers. The city of 422,000 discharges to the Thames River through six treatment plants, and Wastewater By-law WM-28 sets the terms for the industrial share of that flow. Agri-food seasonality is the sizing problem A London vegetable processor might run near zero flow in May and 1,500 m³/day at harvest, with BOD tracking the same curve. Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. That is the regulatory backdrop for oil Water Separators in London: equipment gets sized against the local limits on the route to Thames River, not against a national average.
Location
London, Ontario
Population 422K
Receiving Water
Thames River
Pricing
Sized & quoted per project
What's Included in London
Sizing against London's sewer-use and surcharge regime (centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28)
Support for direct-discharge projects requiring an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks
Effluent characterization matched to London's dominant dischargers: food & beverage processing, agri-food, auto parts, chemicals
Discharge route review for systems releasing toward Thames River
Oil Water Separators on the ground in London
London's harvest-season surges, near-zero flow in May and 1,500 m³/day in September, make equalization and staged DAF trains the core of industrial wastewater design under By-law WM-28. In London, the plants asking about oil Water Separators are mostly in food & beverage processing, agri-food, auto parts and chemicals, and each of those sectors puts a different load on a treatment train. Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. Direct discharge toward Thames River instead requires an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks. In a city of London's size the industrial dischargers are few enough that the utility knows each one by name, which cuts both ways at permit renewal. Projects in London tend to be one-of-a-kind rather than repeat configurations, which is exactly the case where sizing from measured effluent data matters most.
FAQ
Frequently Asked Questions
Everything you need to know about our services.
Do you supply oil Water Separators in London?
Yes. Industrial Wastewater Canada sizes and supplies oil Water Separators for plants across London and the surrounding region. Most local demand comes from food & beverage processing, agri-food, auto parts, chemicals. Send a quote request with your flow rate and effluent type and a sized proposal follows.
What discharge rules apply to industrial wastewater in London?
Centre of southwestern Ontario agri-food belt; City of London Wastewater By-law WM-28. Sizing pretreatment for the peak wastes capital eleven months a year; sizing for the average violates the by-law every September. The designs that work here lean on equalization storage, modular DAF trains that switch on in stages, and honest conversations with the city about seasonal discharge agreements. Plants discharging to the municipal sewer answer to that regime; anything released directly toward Thames River needs an Environmental Compliance Approval from Ontario's Ministry of the Environment, Conservation and Parks. We size equipment against whichever limit governs your outfall.
How is oil Water Separators sized for a plant in London?
From your numbers, not from the city's. We start with measured flow and effluent characterization, then check the result against London's local limits. A processor in a city of 422K with food & beverage processing as the dominant sector rarely has the same loading profile as its neighbours, so treatability data drives the selection.
What does oil Water Separators cost in London?
There is no list price; every system is sized and quoted per project. The economics are local, though. Auto-parts and chemical plants bring steadier flows with oil, metals and pH issues instead. The common thread is the Thames, a warm, slow river whose limited assimilative capacity keeps London's by-law enforcement consistent. Payback in London is usually calculated against those surcharge and compliance costs, and the quote spells that comparison out.
Send the flow rate. Get the system.
Flow, contaminants, discharge limit. An engineer replies with a sized treatment train and a quote — no obligation.
In this city
Equipment available here.
Industrial Wastewater Treatment Systems→Oil Water Separators→Dissolved Air Flotation (DAF) Systems→Membrane Bioreactor (MBR) Systems→MBBR Systems (Moving Bed Biofilm Reactors)→Lamella Clarifiers→Sludge Dewatering Screw Presses→Dewatering Centrifuges→Industrial Reverse Osmosis Systems→Wastewater Evaporators & ZLD Systems→Belt Filter Presses→Coalescing Filters→Industrial Bag & Cartridge Filtration→Food & Beverage Processing→Dairy Processing→Breweries & Distilleries→Meat & Poultry Processing→Pulp & Paper→Pharmaceutical & Biotech→Textile & Dyeing→Mining & Mineral Processing→Oil & Gas / Produced Water→Metal Finishing & Plating→Chemical Manufacturing→Power, Boilers & Cooling Towers→
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